This is my present set up, the machine is about fifty years old but still works. The abrasive wheel takes along time to cut. The piece of 1/4 in thick metal you see on the table was cut with this abrasive wheel but it takes about five minutes to cut an inch. The arbor is 5/8 in and wheel speed is about 2000 rpm. Will a carbide tipped blade cut faster? The blades are expensive, will they last long enough to justify their cost?